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what is the highest number of 12 in 100!?                                 

In this question 12=2^2*3

Should I find highest number of 4 in 100! or 2 in 100! and then divide by 2 further?

I'm only confused about how to calculate the highest no of 4 in 100!

1. The painting of a hotel can be done by 10 painters in 5 days. But, in reality there were few dabblers in the group of 10 painters and therefore the work took a little over 6 days for completion. A painter worked twice as fast as the dabbler and used 25% less paint than a dabbler used. If 5 litres extra paint was used than expected, then the total paint used in painting the hotel was (in litres)

2. A, B and C can do a work together in a certain number of days. If A leaves after half the work is done, then the work takes 4 more days for completion, but if B leaves after half the work is done, the work takes 5 more days for completion. If A takes 10 more days than B to do the work alone, then in how many days can C alone do the work?

The explantion in the solution is bit nebulous. Can someone explain me in a more lucid way

Why this solution does not work? What is the conceptual gap here?

Since two opening are for women only so two out of  6 are selected in 6c2 ways. Then for the remaining two openings out of 9 men and 4 women , 2 are selected which can be done in 13c2 ways. so total of 1170 ways.

Where to study the GK portion for SBI PO mains exam?

How to prepare sbi po

Answer= 170

How do I solve this ?

Answer= 24